Journal of Organic Chemistry p. 1931 - 1935 (1989)
Update date:2022-07-30
Topics:
Kume, Takashi
Kojima, Toshikatsu
Iwasaki, Hideharu
Yamamoto, Yohsuke
Akiba, Kin-ya
Silylation of 4,6-dimethyl- and 6-methyl-2-pyrone with tert-butyldimethylsilyl triflate affords the corresponding 2-(silyloxy)pyrylium triflates 2 quantitatively.Lithium diorganocuprates add regioselectively at position 4 of triflates 2 to give 4-substituted 2-(silyloxy)-4H-pyrans 4.Compounds 4 react with electrophiles at position 3 to give 3-bromo- (8), 3-(silyloxy)- (9), 3-methylene- (15), and 3-(1-hydroxybutyl)-3,4-dihydro-2-pyrones (16).
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Doi:10.1002/cber.19681010425
(1968)Doi:10.1007/BF00832996
()Doi:10.1016/j.bmcl.2010.04.138
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(1999)
